Abstract

A slag composition containing steelmaking slag and from about 0.5 to about 10 weight percent of reducing agent. The steelmaking slag contains from about 20 to about 55 weight percent of calcium oxide, from about 10 to about 50 weight percent of ferrous oxide, from about 5 to about 20 weight percent of magnesium oxide, from about 5 to about 20 weight percent of silicon oxide, from 0.5 to about 10 weight per cent aluminum oxide, and from about 0.5 to about 10 weight percent of manganese oxide. The reducing agent contains from about 5 to about 80 weight percent of calcium carbide and from about 10 to about 70 weight percent of an admixture containing silicon or titanium or silicon carbide or combinations thereof.

IPC Classes  ?

• C21B 3/02 - General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
• C21B 5/02 - Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
• C21B 7/06 - Linings for furnaces
• C21C 5/02 - Crucible furnace processes
• C21C 7/04 - Removing impurities by adding a treating agent
• C22B 7/04 - Working-up slag
• C22B 9/10 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals with refining or fluxing agentsUse of materials therefor
• C22C 1/06 - Making non-ferrous alloys with the use of special agents for refining or deoxidising